Hemmoor climate — normals and trends
Hemmoor (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.0 °C and it receives 804 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (17.1 °C on average) and the coldest is January (1.0 °C). Rainfall peaks in July.
Hemmoor averages 61 frost days, 2 hot days (≥ 30 °C) and 152 rainy days per year.
Hemmoor has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 79 to 43 per year over the period.
The hottest day of the period reached 35.2 °C (on 20 July 2022) and the coldest -23.4 °C (on 13 February 1940).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
HemmoorLower Saxony
- coords
- 53.69°, 9.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
12.2°C
Average daily low
6.0°C
Annual rainfall
804mm
Sunshine / day
7.5h
Mean relative humidity
81%
Average peak wind
18.9km/h
Seasonal range
16.1°C
Frost days (< 0 °C)
61 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
33.2 cm
Average feels-like high
9.6 °C
Average feels-like low
3.0 °C
Average peak gust
38.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.42 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
35.2 °C
20 July 2022
Coldest day
-23.4 °C
13 February 1940
Wettest day
70 mm
18 July 2002
Windiest day
57.1 km/h
14 January 1993
Strongest gust
122.4 km/h
23 February 1967
Hottest feels-like
37.7 °C
4 July 2015
Coldest feels-like
-28.6 °C
13 February 1940
Snowiest day
13.0 cm
19 March 2001
Sunniest day
16.6 h
29 June 2019
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 4.5 °C | +1.6 °C | 67 mm | +4 mm |
| Feb | 4.9 °C | +1.2 °C | 17 mm | -34 mm |
| Mar | 11.4 °C | +4.1 °C | 15 mm | -42 mm |
| Apr | 15.1 °C | +3.2 °C | 31 mm | -24 mm |
| May | 18.1 °C | +1.6 °C | 52 mm | -15 mm |
| Jun | 21.4 °C | +2.0 °C | 111 mm | +36 mm |
| Jul | 22.1 °C | +1.1 °C | 137 mm | +49 mm |
| Aug | 22.8 °C | +1.8 °C | 44 mm | -39 mm |
| Sep | 19.6 °C | +1.9 °C | 53 mm | -14 mm |
| Oct | 13.4 °C | +0.5 °C | 113 mm | +46 mm |
| Nov | 8.6 °C | +1.2 °C | 77 mm | +12 mm |
| Dec | 6.8 °C | +2.5 °C | 36 mm | -30 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Hemmoor?
Hemmoor has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 804 mm of precipitation per year.
What is the hottest day ever recorded in Hemmoor?
The hottest day measured in Hemmoor between 1940 and 2025 was 20 July 2022, reaching 35.2 °C.
What is the coldest day in Hemmoor?
The coldest day measured in Hemmoor between 1940 and 2025 was 13 February 1940, at -23.4 °C.
Does it snow in Hemmoor?
Yes. Hemmoor gets on average 33.2 cm of snow per year and has around 61 frost days.
Has the climate of Hemmoor warmed?
Yes: Hemmoor warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hemmoor?
The wettest day measured in Hemmoor between 1940 and 2025 was 18 July 2002, with 70 mm of rain in 24 hours.
What was the windiest day in Hemmoor?
The windiest day measured in Hemmoor between 1940 and 2025 was 14 January 1993, with winds reaching 57.1 km/h.
What is the warmest month in Hemmoor?
The warmest month in Hemmoor is July (17.1 °C on average); the coldest is January (1.0 °C).
How much does it rain in Hemmoor?
Hemmoor receives on average 804 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Hemmoor?
Hemmoor gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hemmoor?
The heaviest 24-hour snowfall measured in Hemmoor between 1940 and 2025 was 19 March 2001, with 13.0 cm.
Are there tropical nights in Hemmoor?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Hemmoor.
What was the most extreme apparent temperature in Hemmoor?
In Hemmoor, between 1940 and 2025, the highest apparent temperature reached 37.7 °C on 4 July 2015, and the lowest was -28.6 °C on 13 February 1940.
Compare Hemmoor with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hemmoor